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pendingMiniBlocks.go
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/
pendingMiniBlocks.go
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package pendingMb
import (
"sync"
"github.com/ElrondNetwork/elrond-go-core/core"
"github.com/ElrondNetwork/elrond-go-core/core/check"
"github.com/ElrondNetwork/elrond-go-core/data"
"github.com/ElrondNetwork/elrond-go-core/data/block"
"github.com/ElrondNetwork/elrond-go-logger"
"github.com/ElrondNetwork/elrond-go/process"
)
var _ process.PendingMiniBlocksHandler = (*pendingMiniBlocks)(nil)
var log = logger.GetOrCreate("process/block/pendingMb")
type pendingMiniBlocks struct {
mutPendingMbShard sync.RWMutex
mapPendingMbShard map[string]uint32
}
// NewPendingMiniBlocks will create a new pendingMiniBlocks object
func NewPendingMiniBlocks() (*pendingMiniBlocks, error) {
return &pendingMiniBlocks{
mapPendingMbShard: make(map[string]uint32),
}, nil
}
func (p *pendingMiniBlocks) getAllCrossShardMiniBlocksHashes(metaBlock *block.MetaBlock) map[string]uint32 {
crossShardMiniBlocks := make(map[string]uint32)
for _, mbHeader := range metaBlock.MiniBlockHeaders {
if !shouldConsiderCrossShardMiniBlock(mbHeader.SenderShardID, mbHeader.ReceiverShardID) {
continue
}
crossShardMiniBlocks[string(mbHeader.Hash)] = mbHeader.ReceiverShardID
}
for _, shardData := range metaBlock.ShardInfo {
for _, mbHeader := range shardData.ShardMiniBlockHeaders {
if !shouldConsiderCrossShardMiniBlock(mbHeader.SenderShardID, mbHeader.ReceiverShardID) {
continue
}
crossShardMiniBlocks[string(mbHeader.Hash)] = mbHeader.ReceiverShardID
}
}
return crossShardMiniBlocks
}
func shouldConsiderCrossShardMiniBlock(senderShardID uint32, receiverShardID uint32) bool {
if senderShardID == receiverShardID {
return false
}
if senderShardID != core.MetachainShardId && receiverShardID == core.MetachainShardId {
return false
}
if senderShardID == core.MetachainShardId && receiverShardID == core.AllShardId {
return false
}
return true
}
// AddProcessedHeader will add in pending list all miniblocks hashes from a given metablock
func (p *pendingMiniBlocks) AddProcessedHeader(headerHandler data.HeaderHandler) error {
if check.IfNil(headerHandler) {
return process.ErrNilHeaderHandler
}
log.Trace("AddProcessedHeader",
"shard", headerHandler.GetShardID(),
"epoch", headerHandler.GetEpoch(),
"round", headerHandler.GetRound(),
"nonce", headerHandler.GetNonce())
return p.processHeader(headerHandler)
}
// RevertHeader will remove from pending list all miniblocks hashes from a given metablock
func (p *pendingMiniBlocks) RevertHeader(headerHandler data.HeaderHandler) error {
if check.IfNil(headerHandler) {
return process.ErrNilHeaderHandler
}
log.Trace("RevertHeader",
"shard", headerHandler.GetShardID(),
"epoch", headerHandler.GetEpoch(),
"round", headerHandler.GetRound(),
"nonce", headerHandler.GetNonce())
return p.processHeader(headerHandler)
}
func (p *pendingMiniBlocks) processHeader(headerHandler data.HeaderHandler) error {
metaBlock, ok := headerHandler.(*block.MetaBlock)
if !ok {
return process.ErrWrongTypeAssertion
}
crossShardMiniBlocksHashes := p.getAllCrossShardMiniBlocksHashes(metaBlock)
p.mutPendingMbShard.Lock()
defer p.mutPendingMbShard.Unlock()
for mbHash, shardID := range crossShardMiniBlocksHashes {
if _, ok = p.mapPendingMbShard[mbHash]; !ok {
p.mapPendingMbShard[mbHash] = shardID
continue
}
delete(p.mapPendingMbShard, mbHash)
}
p.displayPendingMb()
return nil
}
// GetPendingMiniBlocks will return the pending miniblocks hashes for a given shard
func (p *pendingMiniBlocks) GetPendingMiniBlocks(shardID uint32) [][]byte {
p.mutPendingMbShard.RLock()
defer p.mutPendingMbShard.RUnlock()
pendingMiniBlocksToReturn := make([][]byte, 0)
for mbHash, mbShardID := range p.mapPendingMbShard {
if mbShardID != shardID {
continue
}
pendingMiniBlocksToReturn = append(pendingMiniBlocksToReturn, []byte(mbHash))
}
if len(pendingMiniBlocksToReturn) == 0 {
return nil
}
return pendingMiniBlocksToReturn
}
// SetPendingMiniBlocks will set the pending miniblocks hashes for a given shard
func (p *pendingMiniBlocks) SetPendingMiniBlocks(shardID uint32, mbHashes [][]byte) {
p.mutPendingMbShard.Lock()
defer p.mutPendingMbShard.Unlock()
for _, mbHash := range mbHashes {
p.mapPendingMbShard[string(mbHash)] = shardID
}
}
// IsInterfaceNil returns true if there is no value under the interface
func (p *pendingMiniBlocks) IsInterfaceNil() bool {
return p == nil
}
func (p *pendingMiniBlocks) displayPendingMb() {
mapShardNumPendingMb := make(map[uint32]int)
for mbHash, shardID := range p.mapPendingMbShard {
mapShardNumPendingMb[shardID]++
log.Trace("pending miniblocks", "shard", shardID, "hash", []byte(mbHash))
}
for shardID, num := range mapShardNumPendingMb {
log.Debug("pending miniblocks", "shard", shardID, "num", num)
}
}